Sulfuric-acid plant.



PATENTED AUG. 23,-1904.

A. ZANNER. SULPURIC ACID vPLANT. APPLI'GATIONLED MAY 14. 190s.

2 SHEETS-SHEBT l.

N0 MODEL.

PATENTED AUG. 23,1904.

l y n A.`ZANNBR. f lvSULPURIC"ACID PLANT. APPLICATION FILED MAY 14 19032.8HEETS-SHEET 2.

No MODEL.

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' transverse sectional View on the line 3 3 of Patented August 23, 1904.

PATENT OFFICE.

Anonr ANNEE 'or BnUssELslEELGIUM. I

suLFuRlC-Aoib PLANT".v

SPECIFIGATIGN forming part of Letters Patent No. 768,108, dated August28j, 190,4;`

Application filed May 14, 1903.

To (LZZ whom it may concern:

Be it known that I, ADoLF ZANNER, a subject of the King of Belgium,residing at Brussels, Belgium, have invented certain new and usefulImprovements in Sulfuric-Acid Plants; and I do herebydeclare thefollowing to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which itappertains to make' and use the same.

The present invention relates to the establishment of a plant for the.manufacture of sulfuric acid wherein the sulfur burning or roastingfurnace is connected to the Glover tower through the intermediacy ofconveying-fines of such capacityand arrangement as to receive anappropriate number of concentrating vessels or receptacles, so that thewaste heat of the gases from the roasting-furnace may be utilized toeffect the further concentration of the sulfuric acid recovered from theGlover tower while at the same time correspondingly reducing thetemperature of the gases, so that the presence of the concentratingVessels willA aord a means for establishing or regulating thetemperature with which the gases enter the base vof the Glover tower.

In the accompanyingdrawings, Figure 1 represents a sectional elevationof a plant established in accordance with my invention. Fig. 2represents a largersectional yiew of a portion of the connecting-flueand its contained concentrating vessels. Fig. 3 represents a Fig. 2.

Similar letters of reference indicate similar parts throughout theseveral views.

Referring to the drawings, A indicates a sulfur burning or roastingfurnace of any suitable type, and B indicates a Glover tower. Betweenthese two structures extends the conduit or flue C, discharging thegases from the furnace A into the base ofthe Glover tower.

The flue C is, in accordance with my invention, vmade of suflicientextent and capacity to readily receive one or more vessels for theconcentration of sulfuric acid, whether chamber acid or acid produced bythe Glover process. As illustrated in Fig. l, these receptacles may beinserted in the flue through semina 157,104. (No modem a top openingprovided for that purpose. They may be of any desired construction, theconstruction illustrated in the drawings being that represented, forexample, in my German Patent No. 184,661, dated April 2, l1901, for

outer vessel a may, for instance, have its inner surface lined withplates of stoneware or other acid-proof material, suitably cemented tothe said inner surface, the joints between the plates being likewiseclosed or packed with the same cement, preferably soluble glass andasbestos. The transverse walls d may be formed'of the same acid-proofmaterial as the inner walls of the receptacle and cover the Ijointsbetween the plates t, so consolidating them that none of the'plates canbecome loose even should the binding action of the cement fail to bemaintained, which, of course, is not to be expected. Corner-fillets@,formed of stoneware, serve to close up the joints of the angles and topreventthe acid from gaining access through these joints. Aperturesfyare provided in the several partitions, which aperturesare arranged outof line with each other, so that the acid admitted through the pipel gis compelled to follow a serpentine course on its way to the outlet-pipet. The covers or lids t" of the several chambers con- Ysist of cast-ironplates lined, with earthenware or similar material. For leading olf theVapors or water of evaporation the capsj are provided, whichwhile-permitting free exit of fthe watery vapor protects the openings rfrom the ingress of flue-dust. It will be noted `that the inlet-port forthe chamber-acid or Glover-tower acid is at the point farthest removedfrom the exit-aperture ofv the concentrated product. freshly-admittedacid is therefore received at the cooler part of the concentratingvessel and issues at the hottest part thereof, receiving gradualincrements of heat during its serpentine course through the vessel.Moreover, inasmuch as the water of evaporation from the concentratingvessel enters the body of sulfurous fumes 'and gases on their wayy tothe Glover tower the presence of these vapors probably influences theformation of the sulfuric acid in the tower itself. Furthermore,

The

5 5 a process of concentrating sulfuric acid. The

IOO

the temperature with which the sulfurous fumes and gases enter theGlover tower may be established or regulated by increasing the number ofconcentrating vess'els or by increasing the supply of acid thereto.

Having thus described my invention, what I claim is- A plant for themanufacture of sulfuric acid, comprising a roasting-furnace, a Glovertower, a heating-Hue for the passage of the sulfur fumes and gases fromthe furnace to the tower, and vessels for the concentration of sulfuricacid located within said flue and adapted to be inserted and withdrawntherefrom, said vessels being provided with an inlet or supply pipeextending through the wall of the flue so as to receive its supply fromwithout, and a discharge-pipe likewise extending through the Wall of theliuc, and vapor-exit openings discharging into the liuc, the inlet orsupply pipe being located at the end proximate to the tower and thedischargepipe being located at the end proximate to the furnace;substantially as described.

In testimony whereofl I aiix my signature in presence of two witnesses.

ADOLF ZANNER. Witnesses:

MAURICE GERBeAUI/r, GREGORY PHELAN.

